Electromechanical relay motor



Aug. 13, 1929. M. CHIROL ELECTROMECHANICAL RELAY MOTOR Filed Oct. 20, 1926 Inventor Maurice C/uJroZ Id 12km r fltlbrneys Patented Aug. 13, 1929.

UNITED STATES PATENT OFFICE.

nannies cHInoL, or nouns-Leanna,

FRANCE, ASSIGNOR TO COMPAGNE POUR LA FABRICATIONS DES COMPTEURS ET MATERIEL DUSINES A GAZ, OF MONTROUGE, FRANCE, AND LAC'IION A DISTANCE, OF PARIS, FRANCE, BOTH JOINT-STOCK COM- ranrns or FRANCE.

ELECTROMECHANICAL RELAY MOTOR.

Application filed October 20, i926, Serial No. 143,001, and in France September The present invention relates to an electro-mechanioal relay motor b means of which the actuation of a mova le member, such as for example a mercury switch, a

clutch mechanism, a reversing lover or the like, can be effected in one direction or 1n the opposite direction.

Although the present device can be applied to various purposes, its operation in conjunction with a mercury switch will be described with the help of the accompanying drawing in which:

' Figures 1 and 2 (this latter figure being a section on line II-II of Fig. 1) are diagrammatical representations of the electrical and magnetic circuits of the apparatus;

Figure 3 is a plan view of part ofthe mechanism; 7

Figure 4 is an {elevation of a further partzof the mechanism;

Figure 5. is a modification of the device shown in Fig. 4;

Figure 6- shows a mercury switch which is controlled by the apparatus according to the present invention.

' In Figures 1 and 2, 1 is a magnet, 2 and 3 are the laminated pole pieces of the magnet separated by an air gap 6; 4 and 5 are coils wound respectively around-the pole pieces 2 and 3, two capacities 7 and 8 bemg respectively connected in series with the two coils 4 and 5. The electrical circuits 7, 4 and 8, 5 are connected in parallel to an alternating current feed circuit and are adapted to oscillate respectively in response to current impulses having frequencies f, and f originating from the alternating current feed circuit. 9 and 10are two vibrating blades of magnetic material, having respectively a frequency of own vibration f and f,. The blades 9 and 10 are fixed at their ends 11 and 12 res ectively, the other ends remaining free. 8n. the blade 9 is mounted a flexible plate 13 and the blade 10 carries a flexible plate 14.

.In Figure 3, 13 and 14 are the plates already shown in Figures 1 and 2, which cooperate, in the manner of pawls, with ratchet wheels 15 and 16 respectively integral with sun wheels 17 and 18 of a. dif- 'ferential mechanism 1 23, and 24 are reduction device s wheel 15 rotates,

the shaft 25.

of which 19 is the planet wheel. 20 is the shaft to which the planet wheel is connected and 21, 22, gears. 25 is the driving shaft of the device on which is mounted the mercury switch S. The shaft 25 rotates at a smaller speed than the shaft 20 owing to the reduction gears, and it is positioned below the shaft 20 in the con-' struction shown. y

In Fig. 4, an arm 27 integral with the shaft 25 carries two heels 28 and 29 which are capable of abutting against either one of the plates 13 and 14 as the shaft 25 rotates in one 'or the other direction.

In Fi 5 is shown a modification of the own in Fig. 4. In this case, the motion of thearm 27 is limited by two fixed stops 30 and 31.v

In Figure 6 is shown a mercury switch 32 known per se, in the form of a tubular segment and having two mercury-filled pockets 3?), 34, to which are connected the two wires 36, 37 of the'electrical circuit which is to be controlled. This switch is rigidly connected to the shaft 25. in any nown manner. a

The operation of the apparatus is as follows. When a current having a frequency 7'', is caused to flow in the circuits 7, 4 and 8', 5, the circuit 7, 4 alone enters into reso- 'nance and the blade 9, being polarized by the magnet 1, vibrates at a frequency 7, which corresponds to its oWnfrequency of vibration. The blade 10 does not vibrate. The flexible plate 13 which is mounted on the armature 9, engages the wheel 15 in the same way as a pawl engages a ratchet wheel. This thereby driving the sun wheel 17 and consequently the planet wheel 19, the shaft 20, the gears 21, 22, 23, 24 and This shaft rotates until the heel 28 abuts against the plate 13. This plate is sprung out of engagement with the wheel 15 which thus ceases to rotate. The mercury switch, being mounted on shaft 25, is tilted and the mercury in the-tube no longer forms a bridge over the two pockets 33, 34; thus the electrical circuit which is to-be controlled is' broken.

' to efiect a given work,

'tion gear.

Referring now to Fig. 5, it will be seen that in this modification when the shaft 25 is rotated by the operation just described, the arm 27 at the end of its stroke will come and abut against the stop 30. If the wheel 15 continues to rotate under the action of the vibrating blade 13, the shaft 20 now being' stationary, the planet wheel 19 will cease to rotate around the shaft 20, but will cause the sun wheel 18 and hence the wheel 16'to rotate in an opposite direction to that of the rotation of wheel 15.

' If a current of frequency f, flows in the electrical circuits 7 4 and 8, 5, only the circuit 8, 5 will enter into resonance and the blade 10 alone is caused to vibrate The shaft 25 is rotated in the same manner as hereinbefore described but in the opposite direction.

Although the sun wheels of the difi'erential mechanism have been driven by means of a ratchet and pawl mechanism, it will be obvious to those versed in the art that any other one-way acting device could be used for the operation.

Furthermore, the polarizing magnet 1 could be omitted and in this case, as is known, the vibrating blades should have frequencies of vibration double those of the current flowing in the exciting coils.

The main advantages of the present apparatus are due to. its simplicity, to its great sensitiveness and to its low energy consumption. In respect of this latter advantage, it is'pointed out that on the one hand the magnetic circuits of the exciting coils are short and are laminated, and on the other hand, it is possible, in order to effect a given work, to utilize the power which is atones disposal for as long a time as desired, in order thanks to the reduc- I claim:

1. An electro-mechanical relay motor comprising twovibrating blades of megnetic material, two electro-magnets, one for each blade, two rotatable members, a one-way acting device arranged between each blade and the corresponding rotatable member, in such, amanner that the rotatable members are actuated in opposite directions, and a differential mechanism connected to said rotatable members. t '2. An electro-mechanical relay motor comprising two vibrating blades of magnetic material, two electro-magnets, one for each blade, two coaxial ratchet-wheels, pawls on said blades engaging said ratchet wheels te rotate them in opposite directions, a differential mechanism comprising, a sun wheel connected to each ratchet wheel, a planet wheel engaging with the two sun wheels, and a shaft to be driven, planet wheel.

3. An electro-mechanical relay motor com- 'bers,

connected to said prising two vibrating blades'of magnetic material, two electro-magnets, one for each blade,two rotatable members, two mechanical connections arranged between said blades and the rotatable members, in such a manner that the rotatable members are actuated in opposite directions, a differential mechanism connected to said rotatable memand means for limiting the amplitude of movement of one of said rotatable members.

4. An electro-mechanical relay motor comprising two vibrating blades of magnetic material, two electro-magnets, one for each blade, two coaxial ratchet wheels, pawls on said blades engaging said ratchet wheels to rotate them in opposite directions, a differential mechanism comprising two sun wheels connected to the ratchet wheels, a planet wheel engaging with the two sun wheels, a shaft to be driven connected to said planet wheel, a finger secured to said shaft, and fixed abutments for said finger.

5. An electro-mechanical relay motor comprising two vibrating blades of magnetic material, two electro-magnets, one for each blade, a permanent magnet on the poles of which are mounted the respective cores of said electro-magnets, two rotatable members, and two' one-way acting devices arable members are actuated in opposite directions.

6. An'electro-mechanical relay motor comprising two vibrating blades of magnetic material, two electro-magnets, one for each blade, a permanent magnet on the poles of which are mounted the respective cores of said 'electro-magnets, two coaxial ratchet wheels, pawls on said'blades engaging said ratchet wheels to rotate them in opposite directions, a difierential mechanism comprising a sun wheel connected to each ratchet Wheel, a planet wheel engaging with the two sun wheels, and a shaft to be driven, connected to said planet wheel.

7. An electro-mechanical relay motor comprising two vibrating blades of magnetic material, two electro-magnets, one for each blade, a permanent magnet on the poles of which are mounted. the respective cores of said electro-niagnets, two coaxial ratchet wheels, pawls on said blades engaging said ratchet wheels to rotate them 1n opposite directions, a differential mechanism comprising a sun wheel connected. to each ratchet wheel, a planet wheel engaging with the a I 8. An electro-mechamcal relay motor comprising two vibrating blades of magnetic material, two electro-magnets, one for each blade, a permanent magnet on the poles of which are mounted the respective cores of said electro-magnets, two rotatable members, two mechanical connections arranged between said blades and the rotatable members, in such a manner that the rotatable members are actuated in opposite directions, a differential mechanism connected to said rotatable members, and means for limiting the amplitude of movement of one of said rotatable tion.

prising a plurality of vibrating blades of magnetic material, an electro-magnet for each blade, a plurality of rotatable members, and a mechanical connection between each blade and the corresponding rotatable member, the mechanical connection for one blade being so constructed and disposed with 1 reference to its rotatable member as to rotate the latter member in a direction opposite to that in which the other rotatable member is driven by its mechanical connec- MAURICE CHIROL. 

